/**
 * @file        Container that provides transition functions
 * @author      Icemic Jia <bingfeng.web@gmail.com>
 * @copyright   2015-2016 Icemic Jia
 * @link        https://www.avgjs.org
 * @license     Apache License 2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const PIXI = require('pixi.js');

const settings = PIXI.settings;

/**
 * Shared Timer
 *
 * @export
 * @class Ticker
 * @extends {PIXI.ticker.Ticker}
 */
export default class Ticker extends PIXI.ticker.Ticker {
  constructor(...args) {
    super(...args);

    this.elapsedTime = 0;

    this.add(dt => {
      this.elapsedTime += dt / settings.TARGET_FPMS;
    });
  }
}
